[PATCH v3 2/6] wbclient: fix conversion logic in wbcSidToStringBuf
Jeff Layton
jlayton at samba.org
Wed Jul 31 08:38:19 MDT 2013
Might as well fix it to handle large authority values properly. Also
correct some of the formatting.
Signed-off-by: Jeff Layton <jlayton at samba.org>
---
nsswitch/libwbclient/wbc_sid.c | 31 +++++++++++++++++--------------
1 file changed, 17 insertions(+), 14 deletions(-)
diff --git a/nsswitch/libwbclient/wbc_sid.c b/nsswitch/libwbclient/wbc_sid.c
index 99091c9..471f71b 100644
--- a/nsswitch/libwbclient/wbc_sid.c
+++ b/nsswitch/libwbclient/wbc_sid.c
@@ -32,7 +32,7 @@
* result if it was long enough. */
int wbcSidToStringBuf(const struct wbcDomainSid *sid, char *buf, int buflen)
{
- uint32_t id_auth;
+ uint64_t id_auth;
int i, ofs;
if (!sid) {
@@ -40,22 +40,25 @@ int wbcSidToStringBuf(const struct wbcDomainSid *sid, char *buf, int buflen)
return 10; /* strlen("(NULL SID)") */
}
- /*
- * BIG NOTE: this function only does SIDS where the identauth is not
- * >= ^32 in a range of 2^48.
- */
-
- id_auth = sid->id_auth[5] +
- (sid->id_auth[4] << 8) +
- (sid->id_auth[3] << 16) +
- (sid->id_auth[2] << 24);
+ id_auth = (uint64_t)sid->id_auth[5] +
+ ((uint64_t)sid->id_auth[4] << 8) +
+ ((uint64_t)sid->id_auth[3] << 16) +
+ ((uint64_t)sid->id_auth[2] << 24) +
+ ((uint64_t)sid->id_auth[1] << 32) +
+ ((uint64_t)sid->id_auth[0] << 40);
- ofs = snprintf(buf, buflen, "S-%u-%lu",
- (unsigned int)sid->sid_rev_num, (unsigned long)id_auth);
+ ofs = snprintf(buf, buflen, "S-%hhu-", (unsigned char)sid->sid_rev_num);
+ if (id_auth >= UINT32_MAX) {
+ ofs += snprintf(buf + ofs, MAX(buflen - ofs, 0), "0x%llx",
+ (unsigned long long)id_auth);
+ } else {
+ ofs += snprintf(buf + ofs, MAX(buflen - ofs, 0), "%llu",
+ (unsigned long long)id_auth);
+ }
for (i = 0; i < sid->num_auths; i++) {
- ofs += snprintf(buf + ofs, MAX(buflen - ofs, 0), "-%lu",
- (unsigned long)sid->sub_auths[i]);
+ ofs += snprintf(buf + ofs, MAX(buflen - ofs, 0), "-%u",
+ (unsigned int)sid->sub_auths[i]);
}
return ofs;
}
--
1.8.3.1
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